QuickHashIntSet::add()

(PECL quickhash >= Unknown)

This method adds a new entry to the set

说明

publicQuickHashIntSet::add(int $key): bool

This method adds a new entry to the set, and returns whether the entry was added. Entries are by default always added unless QuickHashIntSet::CHECK_FOR_DUPES has been passed when the set was created.

参数

$key

The key of the entry to add.

返回值

TRUE when the entry was added, and FALSE if the entry was not added.

范例

Example #1 QuickHashIntSet::add() example

<?php
echo "without dupe checking\n";
$set = new QuickHashIntSet( 1024 );
var_dump( $set->exists( 4 ) );
var_dump( $set->add( 4 ) );
var_dump( $set->exists( 4 ) );
var_dump( $set->add( 4 ) );
echo "\nwith dupe checking\n";
$set = new QuickHashIntSet( 1024, QuickHashIntSet::CHECK_FOR_DUPES );
var_dump( $set->exists( 4 ) );
var_dump( $set->add( 4 ) );
var_dump( $set->exists( 4 ) );
var_dump( $set->add( 4 ) );
?>

以上例程的输出类似于：

without dupe checking
bool(false)
bool(true)
bool(true)
bool(true)
with dupe checking
bool(false)
bool(true)
bool(true)
bool(false)